Socrates argued that the unexamined life is not worth living. For the past decade, the authors--along with many colleagues, organizations, and commercial firms--have been immersed in the booming, buzzing confusion that is the community landscape of higher education. They have communities that build software (e.g., Jasig, Kuali, Moodle, Sakai), communities that buy together (e.g., Internet2, Net+), and communities that create services unique to the academy (e.g., Digital Preservation Network, DuraSpace, HathiTrust). Some of these communities are thriving as they solve common institutional problems, whereas some remain short of their aspirations. For others, it is still far too early to discern if they will reach critical mass and succeed. The authors argue that educators must find ways to be more effective in solving the problems that they face. Communities can be an essential part of the solution. IT leaders must examine the lessons learned from the last decade of network-enabled communities and must boldly envision how to best innovate solutions to the shared challenges that lie ahead. They suggest that exploring the "marketecture" of community can help answer the challenges. (Contains 2 figures and 9 notes.)